Frame for a bicycle



FIG. 1 is a front/right-side/top perspective view of a frame for a bicycle showing the new design;

FIG. 2 is a front-side elevational view thereof;

FIG. 3 is a rear-side elevational view thereof;

FIG. 4 is a left-side elevational view thereof;

FIG. 5 is a right-side elevational view thereof;

FIG. 6 is a top-side elevational view thereof; and

FIG. 7 is a bottom-side elevational view thereof.

FIG. 8 is a front/right-side/top perspective view of the frame for a bicycle in a folded configuration;

FIG. 9 is a front-side elevational view thereof;

FIG. 10 is a rear-side elevational view thereof:

FIG. 11 is a left-side elevational view thereof;

FIG. 12 is a right-side elevational view thereof;

FIG. 13 is a top-side elevational view thereof;

FIG. 14 is a bottom-side elevational view thereof; and,

FIG. 15 illustrates is a front/right-side/top perspective view of the claimed frame for a bicycle, with environmental structure illustrated in broken lines that forms no part of the claimed design. 

CLAIM The ornamental design for a frame for a bicycle, as shown and described. 